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Energies 2018, 11(11), 3070; https://doi.org/10.3390/en11113070

Robust Load Frequency Control Schemes in Power System Using Optimized PID and Model Predictive Controllers

1
Electrical and Electronics Engineering Department, University of the Ryukyus, Okinawa 903-0213, Japan
2
Electrical Power and Machines Department, Zagazig University, Zagazig 44519, Egypt
*
Author to whom correspondence should be addressed.
Received: 16 October 2018 / Revised: 30 October 2018 / Accepted: 5 November 2018 / Published: 7 November 2018
(This article belongs to the Special Issue Electric Power Systems Research 2018)
PDF [844 KB, uploaded 7 November 2018]

Abstract

Robust control methodology for two-area load frequency control model is proposed in this paper. The paper presents a comparative study between the performance of model predictive controller (MPC) and optimized proportional–integral–derivative (PID) controller on different systems. An objective function derived from settling time, percentage overshoot and percentage undershoot is minimized to obtain the gains of the PID controller. Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) are used to tune the parameters of the PID controller through performance optimization of the system. System performance characteristics were compared to another controller designed based on MPC. Detailed comparison was performed between the performances of the MPC and optimized PID. The effectiveness and robustness of the proposed schemes were verified by the numerical simulation in MATLAB environment under different scenarios such as load and parameters variations. Moreover, the pole-zero map of each proposed approach is presented to investigate their stability.
Keywords: load frequency control; two area power system; optimized PID controller; genetic algorithm and particle swarm optimization; model predictive control load frequency control; two area power system; optimized PID controller; genetic algorithm and particle swarm optimization; model predictive control
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Charles, K.; Urasaki, N.; Senjyu, T.; Lotfy, M.E.; Liu, L. Robust Load Frequency Control Schemes in Power System Using Optimized PID and Model Predictive Controllers. Energies 2018, 11, 3070.

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